Unit 11A

Question 1

tetra brick is a _______ type of packaging and is it suitable for commercial sterility?

Answer 1

“form-fill-seal” packaging

not suitable

Question 2

hermetic package

Answer 2

hermetic- impermeable to gas and airtight

Question 3

are tetra bricks and plastic bottles hermetic?

Answer 3

yes

Question 4

how was tin cans traditionally made?

Answer 4

steel with a thin costing of tin

Question 5

how are tin cans now made?

Answer 5

tin has been replaced with other corrosion resistant metals

Question 6

what are epoxy resins

Answer 6

used as internal coatings for acidic food products

prevent metal contamination from dissolving into food product

Question 7

how are epoxy resins commonly made?

Answer 7

by BPA (bisphenol A)

Question 8

why ribbing on cans

Answer 8

to help withstand retort pressure

Question 9

is aluminium malleable

Answer 9

being able to be pushed/hammered to change shape without breaking

Question 10

does aluminum need internal pressure to maintain shpe

Answer 10

yes

Question 11

why is co extrusion beneficial ?

Answer 11

is combined the specific individual characteristics into one ( mix together to create a final hybrid film)

Question 12

inner layer in a retort pound (flexible can )

Answer 12

polyproylene

Question 13

2nd layer of a retort pouch

Answer 13

aluminum foil for hermetic qualitites

Question 14

3rd layer of a retort pouch

Answer 14

nylon provides resistence to abrasion (scraping or wearing away in metal)

Question 15

4th layer in a retort pouch

Answer 15

polyester- heat resistance

Question 16

retrort thermal formed trays

Answer 16

peel and then microwave

Question 17

how many layers does a tetra laminate have

Answer 17

4

Question 18

susceptor based packaging

Answer 18

used to absorb microwave energy

Question 19

are claims allowed in the treatment of disease?

Answer 19

no, only food composition and nutritional value

legal definitions for the claims of “low-fat” “low sodium” sct

Question 20

subsituents are also being highly regulated

Answer 20

if it is advertised to be “like milk” it must have similar nutritive value

Question 21

currently tin cans are coated with

Answer 21

epoxy resins

Question 22

in a 3 sigma process how many defective units are allowed per million

Answer 22

66,000 per million

Question 23

in a 6 sigma process how many defective units are allowed?

Answer 23

3.4